Del.icio.us - a social bookmarking Web site that serves as a bookmarks manager for users, similar to a collection of favorite links. You can add bookmarks to your del.icio.us list, categorize the bookmarks, tag them and also share them with others. On some blogs the words "del.icio.us" may appear below a blog post as a hyperlink that readers can click to submit the post to their del.icio.us bookmarks.
Follower - on Twitter, blogs, and other social media sites, a follower is someone who subscribes to receives your updates.
Social media - a term used to describe a variety of Web-based platforms, applications and technologies that enable people to socially interact with one another online. Some examples of social media sites and applications include Facebook, YouTube, Del.icio.us, Twitter, Digg, blogs and other sites that have content based on user participation and user-generated content (UGC).
Social networking site - abbreviated as SNS a social networking site is the phrase used to describe any Web site that enables users to create public profiles within that Web site and form relationships with other users of the same Web site who access their profile. Social networking sites can be used to describe community-based Web sites, online discussions forums, chatrooms and other social spaces online.
UGC - user-generated content, UGC is the term used to describe any form of content such as video, blogs, discussion form posts, digital images, audio files, and other forms of media that was created by consumers or end-users of an online system or service and is publically available to others consumers and end-users. User-generated content is also called consumer generated media (CGM).